Coupling and associated means for lubricating apparatus



Oct. 4, 1932. M. F. CARR 1,880,793

COUPLING AND ASSOCIATED MEANS FOR LUBRICATING APPARATUS Filed nec. e. 1927 4 Ig a. O 7

y @5M/MW I l Wfl/MMM Patented Oct. 4, 1932 UNITED STATES PATENT OFFICE MOSES F. CARB., OFVLEXINGTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO ALEMITE CORPORATION,OF CHICAGO, ILLINOIS, A CORPORATION F DELAWARE COUPLING- AND ASSOCIATED MEANS FOR LUBRICATING APPARATUS Application filed December 8, 1927. Serial No. 238,531.

My invention `aims to provide improvements in lubricating apparatus.

In the drawing, which illustrates a preferred embodiment of my invention Figure 1 illustrates, in elevation, a. lubricant-receiving nipple and a lubricant gun for cooperation therewith;

Fig. 2 is an enlarged cross-section showing the nipple attached to a part to be lubricated and showing the nozzle of the gun attached to the nipple, part of the gun being broken away;

Fig. 3 is an end elevation of the lubricant un; g Fig. i is a section on the line i-4: of Fig. 2 showing the pin and slot coupling means;

Fig. 5 includes a. front end elevation, aside elevation and al rear end elevation, respectively, of the lubricant-receiving nipple.

Fig. 6 is a section of the combined coupling and nozzle sleeve showing one of the coupling pins in plan; and

Fig. 7 is a side elevation of the lubricantreceiving nipple showing one of the pin-like members (in cross-section) of the gun in the position which it assumes when the gun is locked on the nipple.

Referring to the embodiment of my invention, illustrated by the drawing, I have shown a lubricating apparatus comprising a lubricant gun and a lubricant-receiving nipple.

The gun includes, as shown in Fig. 1, the supply barrel 1, having a reduced end portion 2, to which the nozzle and coupling means is secured. At the other end of the barrel lis a removable head 3 through which is threaded a stem 4i. Attached to the stem 4, within the barrel l, is a lubricant-expelling plunger 5 (shown in dotted lines, Fig. 1) and at the other end of the stem 4 is attached a handle 6.

The combined nozzle and coupling sleeve 7 is threadedly secured to the reduced end portion 2 (Fig. 2) and has a nipple-receiving opening 1n its outer end. This opening is intersected by opposed pin-like members 8 (Figs. 2 and 3) which, in this instance, are formed integral with the sleeve 7. I have also provided an abutment 9 within the sleeve and spaced inwardly from the pin-like members 8. The abutment 9 is a washer placed in the sleeve 7.

In plan section, as shown in Fig. 6, each pin-likemember 8 is somewhat rounded at the corners and has, at the face'toward the abutment, a sloping face 8a vfor cooperation with a part on a lubricant-receiving nipple, as hereinafter described.

- Within the nozzle sleeve 7, I have provided aV valve assembly unit vincluding a casing formed of the parts 10 'and A11 threadedly connected, as Shown in Fig.'2.` The part 10 provides the valve seat 12 and the stem 13 of the valve 14 slides in the part 11. A spring 15 is interposed between the valve and the part 11 and normally holds the valve against its seat 12. f

The part 10 has a recess, in its outer end, i

into which the hat portion of abat-shaped sealing washer 16 fits, while the flange portion of the sealing washer is clamped between the end of the part 10 and the abutment 9, all as shown in F ig. 2.

When the sleeve 7 isremoved the valve unit may be removed very easily and quickly and when the sleeve 7 is in place it serves to press the beveled shoulder 17 on thepart 10 against the end 18 of the reduced end portion 2 to make a lubricant tight joint between the parts.

The lubricant-receiving nipple for use Vwith a lubricant-expelling gun,of the c011- struction above referred to, is best shown in Figs. 1, 2, 5 and 7. As illustrated, the nipple is provided with van enlarged central portion 19, a threaded portion 2O at one side of the central portion for threaded engagement with a part 21 to be lubricated, as shown in Fig. 2, and a smooth portion 22 at the otherside for passage through the abutment 9 and the hat washer 16. Within thc nipple, I have provided vthe usual ball check` 23 and spring 24. In the central portion 19, I have f cut two opposed grooves 25-25 (Figs. 1 and 5) which extend only part way around the circumference of the nipple.

These grooves '25 are angled relative to a line transverse to the axis of the nipple to provide wedge-shaped portions 264-26.

`The gun may be coupled with the nipple by introducing the nozzle over the smooth portion 22 of the nipple and turning the barrel in a clockwise direction. Thus, the pinlike members 8 of the gun are entered into the grooves 25 in the nipple and the wedgeshaped portions 26of the nipple cooperate with the sloping faces 8 of the .pin-like members. When the gun is completely coupled with the nipple the pin-like members 8 enter the depressions, or notches 26- in vthe wedge-shaped portions 26, (as shown in Fig. 7 to lock the gun securely to the nip-ple. When the pin-like members are thus engaged with the notches 26a, the g-un cannot be released except by an intentional turning of the gun relative to the nipple to cam the pins out of the notches. In introducing the nipple into the nipple-receiving aperture of the sleeve 7, the smooth portion 22 of the nipplenpasses through the opening inthe abutment 9 and through the hat-shaped sealing part 16. The end of the nipple engages the projecting portion 27of the valve 14: and, as the nipple enters the nozzle, the valve 14 is unseated against the pressure of the spring (Fig. 2). By turning the handle 6 in a clockwise direction, the lubricant in the barrel is forced by the valve seat 12 into the nipple. The lubricant presses the hat portion of the sealinggwasher 16 against the smooth portion of the nipple to ma'ke a peripheral lubricant tight seal.

I am aware that my invention may be embodied in forms other than that shown and described without departing from the scope of my invention and, therefore, reference is made to the following claims, rather than to the foregoing description and drawing; to indicate the scope of my invention.

I claim:

1. Coupling means for lubricating apparatus which includes a lubricant-receiving nipple to be secured to apart to be lubricated, a wedge-shaped part extending part way around the periphery of said nipple and a cooperating nozzle part adapted to be con-l nected with a source of lubricant supply, said nozzle part having a nipple-receiving opening in its outer end, a valve, and a pinlike member intersecting said opening, sloping faces presented by said wedge-shaped part and said pin-like member for cooperation with each other to draw the nozzle toward the nipple thereby to permit the nipple to engage and open the valve during coupling'operation, and a notch in said wedgeshaped part for receiving` the pin-like member to lock the nozzle with the nipple.

n 2. Coupling means for lubricating apparatus comprising a lubricant receiving nipple, a wedge-shaped portion having notches therein extending around kthe periphery of said lubricant-receiving nipple, a cooperating nozzle part having a nipple-receiving opening in itsA outer end, pin-like projections extending from said nozzle part inwardly into said nipple-receiving opening, said pinlike projections and said wedge-shaped portions cooperating to secure said nozzle to said nipple when the nozzle is presented to the nipple and rotated until said pin-like projections seat in said notches, a valve in said nozzle, said valve being opened by said nipple when said nozzle is presented to said nip-ple, springV means for restraining the movement of said Valve, said spring means also serving to retain said pin-like projections in said notches.

In testimony whereof, I have signed my name to this specification.

MOSES F. CARR. 

